If you haven't seen The Moon That Embraces The Sun, you should do so as soon as you watch this video. It was such an upsetting, tear jerking, amazing drama, filled with great child and adult actors. So of course with any kind of somber storyline, there must be a beautiful and airy sounding song in the background. "Back in Time" is the type of song that kicks you when the scene already has you knocked down. So who lent their voice to this beautiful song?